Home / 15,749.28-21,715.96-11,763.66

Finding the Fourth Proportional to 15,749.28, 21,715.96 and 11,763.66

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Solution

The fourth proportional to 15,749.28, 21,715.96 and 11,763.66 is: 16,220.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.28 : 21,715.96 = 11,763.66 : x
  2. Step 2: Convert to fraction form
    15,749.28/21,715.96 = 11,763.66/x
  3. Step 3: Cross multiply
    15,749.28x = 21,715.96 × 11,763.66
  4. Step 4: Simplify right side
    15,749.28x = 255,459,170.01
  5. Step 5: Solve for x
    x = 255,459,170.01/15,749.28
  6. Step 6: Final answer
    x = 16,220.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.